Parco Naturale Regionale del Beigua

In this site you can see a clear example of how a coarse conglomerate is transformed to a sandstone level, in addition to the nature and form of the pebbles composing it. This outcrop highlights a particular phase of the geological evolution of the district of Beigua, when, between the end of the Late Eocene era and the Early Oligocene epoch (35-30 million years ago), marine conglomerates began to deposit from the north-east towards the south-west, testifying a gradual advancement of the seas. This led to the so-called "Tertiary Piedmont Basin" (TPB) being formed. The sea gradually invaded the emerged land, an uneven landscape characterized by valleys, hills, and mountains in the southernmost zone.